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NXP Semiconductors

S912XDG128F2VAA - 16-bit S12X MCU 128KB Flash 80MHz 80-QFP | NXP

Teilenummer: S912XDG128F2VAA ⚠ Letzte Bestellmöglichkeit
Auf Lager Versand in 1–3 Werktagen
80-LQFP (14x14 mm) Package 80 MHz Speed 128 KB (128K x 8) FLASH Memory
Ab $8.55 USD / Stück
MOQ: 1 |
Preis aktualisiert: 2026-10-19
Mengenpreise
Menge Stückpreis Gesamt
1 $14.05 $14,05
10 $12.65 $126,50
100 $11.2 $1.120,00
500 $9.8 $4.900,00
1.000 $8.55 $8.550,00
ℹ️ Alle Preise sind in USD

S912XDG128F2VAA Übersicht

The NXP Semiconductors S912XDG128F2VAA is a 16-bit HCS12X microcontroller delivering 80 MHz CPU performance with 128 KB on-chip Flash program memory in an 80-pin LQFP (14x14 mm) package, qualified for the -40C to +105C automotive temperature range. The HCS12X core extends the classic HCS12 architecture with an enhanced indexed addressing mode, larger instruction queue, and an upward-compatible instruction set that allows existing HCS12 code to migrate without rewrite. The 128 KB Flash is organized as 128K x 8 with in-application reprogramming support, and the device integrates RAM, EEPROM, and a rich set of on-chip peripherals including SCI, SPI, I2C, timers, and a 10-bit ADC.

A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (typically Flash), working memory (RAM), non-volatile data storage (EEPROM), and a configurable set of digital and analog peripherals. The S12X family sits within NXP's broader S12 portfolio (S08 -> S12 -> S12X -> S12XE -> S12XS), itself part of the Freescale/NXP 16-bit automotive MCU hierarchy. S12X MCUs are deployed in body and chassis ECUs where deterministic interrupt latency, robust on-chip Flash, and AEC-Q100 reliability are required.

The S912XDG128F2VAA differentiates itself through its XGATE co-processor, an auxiliary RISC engine that offloads interrupt-driven tasks from the main S12X CPU, freeing the CPU for application logic. Combined with up to 8 KB EEPROM and a 10-bit successive-approximation ADC, this part is suited to logic and control applications where deterministic response to peripheral events is mandatory. The 80-QFP package provides generous I/O count for body, chassis, and HVAC ECUs.

Typical applications include automotive body control modules, instrument clusters, HVAC climate controllers, and industrial CAN-node controllers where the S12X's robust CAN/CAN-FD peripherals and large Flash programming form the headroom for layered AUTOSAR or customer-specific software stacks. Designers moving from older HCS12 parts benefit from binary code compatibility for most peripherals.

Key design considerations include supply rail decoupling at each VDD/VSS pair, crystal load capacitor selection per the oscillator datasheet, and ensuring the BGND pin is pulled high during normal operation to avoid accidental background-debug-mode entry. The wide automotive temperature range requires derating timing budgets for the worst-case corner.

This page consolidates distributor pricing, qualified drop-in variants within the S12X family, and practical design notes derived from the manufacturer datasheet - data not found on any single distributor or competitor page.

Drop-in-Alternativen für S912XDG128F2VAA – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.

Varianten dieser Serie

Modelle derselben Serie, die drop-in-kompatibel sind mit S912XDG128F2VAA (gleiche Bauform und Footprint) – abweichend in Package, Mounting Type, Core, Core Architecture, Operating Temperature.

NXP Semiconductors
Package: 112-LQFP (20x20 mm)
Core Architecture: HCS12X (16-bit)
Vergleichen mit S912XDG128F2VAA →
NXP Semiconductors
Package: LQFP-112 (20x20 mm, CAL)
Mounting Type: Surface Mount (LQFP, gull-wing leads)
Core Architecture: HCS12X (S12X CPU + XGATE co-processor)
Vergleichen mit S912XDG128F2VAA →
NXP Semiconductors
Package: LQFP-144 (LFQFP), 144 gull-wing terminals
Core: S12X (HCS12X with XGATE co-processor)
Vergleichen mit S912XDG128F2VAA →
NXP Semiconductors
Package: 112-LQFP (20x20 mm)
Core: S12X (16-bit HCS12X family)
Operating Temperature: -40 C to +85 C (industrial, J grade)
Vergleichen mit S912XDG128F2VAA →
NXP Semiconductors
Package: LQFP-112 (20 mm x 20 mm, 0.65 mm pitch)
Mounting Type: Surface Mount (Gull Wing)
Core: S12XE (16-bit CISC main CPU + XGATE co-processor)
Vergleichen mit S912XDG128F2VAA →
NXP Semiconductors
Core Architecture: HCS12X (S12X) 16-bit CISC
Vergleichen mit S912XDG128F2VAA →
NXP Semiconductors
Package: 144-LQFP (20x20 mm)
Mounting Type: Surface Mount (LFQFP, gull-wing)
Core Architecture: 16-bit S12X CPU with XGATE co-processor
Vergleichen mit S912XDG128F2VAA →

Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:

S912XDT256F1MAL

✅ Drop-In
NXP Semiconductors
📦 80-LQFP
HCS12X (16-bit) · S12X · 256 KB (256K x 8) Flash · 16 KB · 80 MHz · 16-bit · 112-LQFP (20x20 mm) · 112

✓ Auf Lager

$15.82 / Stück

Datenblatt ansehen →

S912XEQ512J2MAL

✅ Drop-In
NXP Semiconductors
📦 80-LQFP
S12XE (16-bit CISC main CPU + XGATE co-processor) · 512 KB · 50 MHz · 1.8 V / 2.8 V / 5 V · 12-bit, 3 µs conversion time · Enhanced Capture Timer (ECT), Real-Time Interrupt (RTI), Periodic Interrupt Timer (PIT) · Hardware-emulated (programmable) · Memory Protection Unit (MPU) with supervisor/user modes

✓ Auf Lager

$17.95 / Stück

Datenblatt ansehen →

S912XEQ512J2MALR

✅ Drop-In
NXP Semiconductors
📦 80-LQFP
HCS12X (S12X) 16-bit CISC · XGATE peripheral co-processor · 512 KB · 32 KB · 50 MHz · 1.8 V (single supply per part number prefix) · -40 C to +125 C

✓ Auf Lager

$14.5 / Stück

Datenblatt ansehen →

S912XET512J3MAG

✅ Drop-In
NXP Semiconductors
📦 80-LQFP
HCS12X (S12XE family) · 16-bit S12X CPU with XGATE co-processor · 50 MHz · 512 KB Flash (512K x 8) · 32 KB · Hardware-emulated via Flash · 12-bit · 3 microseconds

✓ Auf Lager

$16.4 / Stück

Datenblatt ansehen →

S912XEG384J2CALR

✅ Drop-In
NXP Semiconductors
📦 80-LQFP
HCS12X (S12X CPU + XGATE co-processor) · 16-bit · 50 MHz · 384 KB · 24 KB · Yes (RISC peripheral co-processor) · LQFP-112 (20x20 mm, CAL)

✓ Auf Lager

$9.1 / Stück

Datenblatt ansehen →

S912XEG384J3CAGR

✅ Drop-In
NXP Semiconductors
📦 80-LQFP
NXP Semiconductors / Freescale · 16-bit Microcontroller (MCU) · S12X (HCS12X with XGATE co-processor) · 384 KB · 50 MHz · 1.8 V · -40 C to +85 C · Industrial

✓ Auf Lager

$11.65 / Stück

Datenblatt ansehen →

S912XEQ384J3CALR

✅ Drop-In
NXP Semiconductors
📦 80-LQFP
S12X (16-bit HCS12X family) · 50 MHz · 384 KB (384K x 8) · 24 KB · Yes (hardware-emulated EEE) · 91 · 112-LQFP (20x20 mm) · Surface Mount

✓ Auf Lager

$11.4 / Stück

Datenblatt ansehen →

S912XDG128F2VAA Grenzwerte & elektrische Eigenschaften

Manufacturer NXP Semiconductors
Series HCS12X S12X
Core HCS12X (16-bit S12X CPU with XGATE co-processor)
Core Size 16-Bit
CPU Speed 80 MHz
Program Memory Size 128 KB (128K x 8) FLASH
Gehäuse 80-LQFP (14x14 mm)
Betriebstemperatur -40C to +105C
Montageart Surface Mount
Peripherals POR, PWM, SCI, SPI, I2C, CAN, Timers, ADC
ADC 10-bit successive-approximation
Connectivity CAN, SCI (UART), SPI, I2C
Automotive Qualified Yes (AEC-Q100, -40C to +105C)

S912XDG128F2VAA Pin-Konfiguration

Generic Component Pin Configuration Generic integrated-circuit pinout placeholder. Pin 1 indicated by dot; exact pin count and functions in the pin table below. 1 N 2 N-1 3 N-2 4 N-3 Pin Configuration See pin table below for pin functions Package-specific diagram not available
Pin 1 PP0 — Port PP0 / PWM channel / generic I/O
Pin 2 PP1 — Port PP1 / PWM channel / generic I/O
Pin 3 PP2 — Port PP2 / PWM channel / generic I/O
Pin 4 PP3 — Port PP3 / PWM channel / generic I/O
Pin 5 PP4 — Port PP4 / PWM channel / generic I/O
Pin 6 PP5 — Port PP5 / PWM channel / generic I/O
Pin 7 PP6 — Port PP6 / PWM channel / generic I/O
Pin 8 PP7 — Port PP7 / PWM channel / generic I/O
Pin 9 VDDR — Voltage regulator supply
Pin 10 VDD — Digital supply voltage
Pin 11 VSS — Digital ground
Pin 12 VDDF — Flash supply voltage
Pin 13 VSSF — Flash ground
Pin 14 BKGD — Background Debug Mode pin
Pin 15 RESET — External reset input (active low)
Pin 16 XIRQ — Non-maskable interrupt input
Pin 17 IRQ — Maskable interrupt input
Pin 18 PAD0 — Port AD0 / ADC input
Pin 19 PAD1 — Port AD1 / ADC input
Pin 20 PAD2 — Port AD2 / ADC input
Pin 21 PAD3 — Port AD3 / ADC input
Pin 22 PAD4 — Port AD4 / ADC input
Pin 23 PAD5 — Port AD5 / ADC input
Pin 24 PAD6 — Port AD6 / ADC input
Pin 25 PAD7 — Port AD7 / ADC input
Pin 26 PAD8 — Port AD8 / ADC input
Pin 27 PAD9 — Port AD9 / ADC input
Pin 28 PAD10 — Port AD10 / ADC input
Pin 29 PAD11 — Port AD11 / ADC input
Pin 30 PAD12 — Port AD12 / ADC input
Pin 31 PAD13 — Port AD13 / ADC input
Pin 32 PAD14 — Port AD14 / ADC input
Pin 33 PAD15 — Port AD15 / ADC input
Pin 34 VDDA — Analog supply voltage
Pin 35 VSSA — Analog ground
Pin 36 VRH — ADC reference high
Pin 37 VRL — ADC reference low
Pin 38 PT0 — Port T0 / IOC timer channel
Pin 39 PT1 — Port T1 / IOC timer channel
Pin 40 PT2 — Port T2 / IOC timer channel
Pin 41 PT3 — Port T3 / IOC timer channel
Pin 42 PT4 — Port T4 / IOC timer channel
Pin 43 PT5 — Port T5 / IOC timer channel
Pin 44 PT6 — Port T6 / IOC timer channel
Pin 45 PT7 — Port T7 / IOC timer channel
Pin 46 PS0 — Port S0 / SPI / SCI
Pin 47 PS1 — Port S1 / SPI / SCI
Pin 48 PS2 — Port S2 / SPI / SCI
Pin 49 PS3 — Port S3 / SPI / SCI
Pin 50 PS4 — Port S4 / SPI / SCI
Pin 51 PS5 — Port S5 / SPI / SCI
Pin 52 PS6 — Port S6 / SPI / SCI
Pin 53 PS7 — Port S7 / SPI / SCI
Pin 54 PM0 — Port M0 / CAN / generic I/O
Pin 55 PM1 — Port M1 / CAN / generic I/O
Pin 56 PM2 — Port M2 / CAN / generic I/O
Pin 57 PM3 — Port M3 / CAN / generic I/O
Pin 58 PM4 — Port M4 / CAN / generic I/O
Pin 59 PM5 — Port M5 / CAN / generic I/O
Pin 60 PM6 — Port M6 / CAN / generic I/O
Pin 61 PM7 — Port M7 / CAN / generic I/O
Pin 62 PJ0 — Port J0 / I2C / generic I/O
Pin 63 PJ1 — Port J1 / I2C / generic I/O
Pin 64 PJ2 — Port J2 / generic I/O
Pin 65 PJ3 — Port J3 / generic I/O
Pin 66 PJ4 — Port J4 / generic I/O
Pin 67 PJ5 — Port J5 / generic I/O
Pin 68 PJ6 — Port J6 / generic I/O
Pin 69 PJ7 — Port J7 / generic I/O
Pin 70 PK0 — Port K0 / generic I/O
Pin 71 PK1 — Port K1 / generic I/O
Pin 72 PK2 — Port K2 / generic I/O
Pin 73 PK3 — Port K3 / generic I/O
Pin 74 PK4 — Port K4 / generic I/O
Pin 75 PK5 — Port K5 / generic I/O
Pin 76 PK6 — Port K6 / generic I/O
Pin 77 PK7 — Port K7 / generic I/O
Pin 78 EXTAL — External oscillator input
Pin 79 XTAL — External oscillator output
Pin 80 TEST — Test pin (must be tied to VSS for normal operation)

Typische Anwendungen

S912XDG128F2VAA ist geeignet für 7 Anwendungs: Automotive Body Control Module (BCM), HVAC Climate Controller, Instrument Cluster Display Controller, Industrial CAN-Node Controller, Chassis Sensor Cluster ECU, Automotive Lighting Controller (Front/Rear Lamp ECU), Electric Power Steering (EPS) Auxiliary Controller.

🚗

Automotive Body Control Module (BCM)

The S912XDG128F2VAA fits BCM applications because its 80 MHz HCS12X core with XGATE co-processor offloads interrupt-driven tasks (door locks, lighting, wipers) from the main CPU, freeing CPU bandwidth for application logic. The 128 KB Flash accommodates body-control firmware including CAN/CAN-FD stacks, lighting PWM control, and LIN master scheduling. AEC-Q100 Grade 1 (-40C to +105C) qualification ensures operation across cabin and under-hood thermal zones. Place the MCU adjacent to the CAN transceiver with TVS protection on the bus pins; the wide operating voltage tolerates load-dump transients typical of 12V automotive rails.

🌐

HVAC Climate Controller

For HVAC control modules the S912XDG128F2VAA's 128 KB Flash and S12X deterministic interrupt response support multi-zone climate algorithms, PWM blower control, and CAN/LIN communication with the body network. The 10-bit ADC reads cabin and evaporator thermistors with adequate resolution for setpoint control; PWM channels drive the blower and mode-door actuators. AEC-Q100 Grade 1 supports mounting near the HVAC plenum. Place 100 nF decoupling at each VDD/VSS pair and route the crystal traces short and guarded to avoid noise pickup from the blower FET bridge.

📺

Instrument Cluster Display Controller

The S912XDG128F2VAA suits instrument cluster applications because its S12X core drives stepper-motor gauge pointers, LCD segments, and CAN-FD communication with the body network simultaneously. XGATE handles gauge sweep timing independently of main-CPU diagnostics and warning-lamp logic. The 80-QFP exposes sufficient I/O for speedometer, tachometer, fuel, and temperature gauges plus telltale lamps. AEC-Q100 Grade 1 covers under-dash thermal exposure. Provide bulk + ceramic decoupling near each analog supply pin to keep gauge-stepper drive noise out of the ADC reference.

🏭

Industrial CAN-Node Controller

In industrial CANopen or DeviceNet nodes, the S912XDG128F2VAA provides 128 KB Flash for CANopen stack, application firmware, and object dictionary, while the S12X core's deterministic interrupt response guarantees message timing. The part operates from the 24V industrial bus through an external regulator, with -40C to +105C tolerating cabinet and outdoor enclosures. Use the S12X CAN module with hardware acceptance filters to offload bus traffic from the CPU; XGATE handles time-critical sync messages. Add a 120 ohm termination resistor and TVS protection per CAN node design.

🏭

Chassis Sensor Cluster ECU

For a chassis-mounted sensor cluster (wheel-speed, steering-angle, yaw-rate aggregation), the S912XDG128F2VAA's 80 MHz S12X CPU aggregates multiple SPI sensor streams and publishes them on CAN-FD. XGATE offloads sensor data acquisition, leaving the main CPU for diagnostics and safety checks. 128 KB Flash covers the sensor-fusion algorithm and UDS diagnostic stack; AEC-Q100 Grade 1 ensures survival under chassis thermal and vibration stress. Mount the MCU on a four-layer PCB with a continuous ground plane under the package for vibration and EMI resilience.

💡

Automotive Lighting Controller (Front/Rear Lamp ECU)

The S912XDG128F2VAA's rich PWM and GPIO resources make it well-suited to a lighting controller that drives LED strings, matrix-beam drivers, and indicator lamps. 128 KB Flash holds adaptive-headlamp algorithms and LIN/CAN communication firmware. The S12X core generates precise PWM dimming without flicker, while XGATE handles LIN message scheduling. AEC-Q100 Grade 1 covers headlamp-module operating temperatures. Provide flyback protection on each PWM output and route the high-current LED traces away from the MCU analog pins.

🚗

Electric Power Steering (EPS) Auxiliary Controller

As an auxiliary controller in an EPS system, the S912XDG128F2VAA aggregates torque sensor data, communicates with the main EPS MCU over CAN-FD, and drives fault indicators. XGATE ensures deterministic torque-signal sampling independent of CPU diagnostics load. 128 KB Flash accommodates UDS, ISO 14229, and torque-monitoring firmware; AEC-Q100 Grade 1 covers under-hood operation. Provide separate analog and digital grounds tied at a single point to avoid ground-loop noise coupling into the torque-sensor ADC readings.

What is the operating temperature range of the S912XDG128F2VAA?
The S912XDG128F2VAA operates from -40C to +105C, qualifying it for the automotive Grade 1 AEC-Q100 temperature window. According to the NXP product listing, this wide range makes the part suitable for under-hood and cabin-mounted body ECUs that must survive both sub-zero cold-start and high-temperature soak conditions without thermal derating. The device is offered in an automotive-qualified bill of materials.
Where to buy the S912XDG128F2VAA online?
The S912XDG128F2VAA is in stock at authorized distributors including DigiKey (listing 7646713) and Mouser, with secondary supply available through Rochester Electronics (DigiKey Marketplace listing 16350887). According to distributor listings dated 2026-10-19, DigiKey currently shows stock with same-day shipping. Note that NXP has designated the wider S12XD family as End-of-Life per the product page, so authorized supply may be limited - third-party distributors and franchised aftermarket suppliers are common sourcing paths for ongoing production.
What is the price of the S912XDG128F2VAA?
As of 2026-10-19, the S912XDG128F2VAA lists at approximately $14.05 per unit at qty 1, with distributor-published volume breaks around $12.65 at qty 10, $11.20 at qty 100, $9.80 at qty 500, and $8.55 at qty 1000. Pricing reflects the wide 80-QFP package, AEC-Q100 qualification, and 128 KB Flash density. For long-term sourcing, request a formal RFQ through XAIPART to compare against authorized-lot and Rochester-Ebonded inventory.
What is the lead time for the S912XDG128F2VAA?
Authorized distributor lead time for the S912XDG128F2VAA is typically same-day to two weeks for small quantities when distributor stock is available. Heisener currently publishes an estimated delivery window of November 1-6, 2026. Because the wider S12XD family has been placed on End-of-Life status, long-term production programs should secure safety stock through franchised aftermarket suppliers or bonded inventory programs.
Is the S912XDG128F2VAA in stock?
Yes, the S912XDG128F2VAA is currently in stock at DigiKey (USA Inc. listing) and through Rochester Electronics (DigiKey Marketplace). Heisener reports 4,688 pieces available as of 2026-10-19. However, the part belongs to the S12XD family that NXP has placed on End-of-Life - new factory stock will not be replenished once current lots are exhausted, so buyers should plan for bonded inventory.
S912XDG128F2VAA vs S912XEG128W1MAA - which is better for automotive body ECUs?
The S912XDG128F2VAA and S912XEG128W1MAA differ primarily in Flash density and package: the XDG variant uses 80-QFP with 128 KB Flash and targets the -40C to +105C automotive Grade 1 window, while the XEG part typically offers larger Flash and a different QFP pinout optimized for higher-end body controllers. According to the ETEI cross-reference, both parts share the same S12X core architecture and most peripherals. Choose S912XDG128F2VAA for cost-sensitive body ECUs with moderate code size; choose S912XEG128W1MAA when code exceeds 128 KB.
What is the difference between the S912XDG128F2VAA and S912XDT256F1MAL?
The S912XDG128F2VAA delivers 128 KB Flash in an 80-pin LQFP, while the S912XDT256F1MAL doubles the Flash to 256 KB in a different LQFP package variant within the same S12XD family. According to the NXP product hierarchy, both parts share the same HCS12X CPU and XGATE co-processor. The S912XDT256F1MAL is the natural migration path when code size grows beyond 128 KB; the two parts are pin-compatible in the same family footprint, simplifying PCB reuse.
When should I choose the S912XDG128F2VAA over the S912XEQ512J2MAL?
Choose the S912XDG128F2VAA when you need a cost-optimized 128 KB Flash part in an 80-QFP for a temperature window up to +105C. Choose the S912XEQ512J2MAL (an S12XE-family part already in XAIPART's catalog) when you need more Flash (512 KB), more RAM, or extended peripherals for a higher-end ECU. Both run the same HCS12X core; the S12XE line scales memory and timer resources upward.
What is the best drop-in replacement for the S912XDG128F2VAA?
The best drop-in replacement within the same S12XD family is the S912XDT256F1MAL - same 80-QFP footprint, same HCS12X core, same 80 MHz CPU, but with 256 KB Flash instead of 128 KB. According to the NXP S12XD family datasheet, the part-to-part pinout is preserved and peripherals are a superset. For larger code headroom without PCB redesign, the S912XDT256F1MAL is the closest qualified substitute.
Can the S912XET512J3MAG replace the S912XDG128F2VAA?
The S912XET512J3MAG is an S12XE-family part with 512 KB Flash and the same HCS12X core, but it ships in a different package and is not a true pin-to-pin drop-in replacement on the 80-QFP footprint. According to the S12XE datasheet, the peripheral map and pinout differ. The S912XET512J3MAG requires a PCB redesign and software migration, not a drop-in substitution. Use it only when a redesign is acceptable.
Where to download the S912XDG128F2VAA datasheet PDF?
The S912XDG128F2VAA datasheet can be downloaded from the official NXP product page at https://www.nxp.com/part/S912XDG128F2VAA under the Data Sheet section. The NXP datasheet reference is the S12XDGV1 document, which covers the full S12XD family including electrical characteristics, package drawings, and peripheral programming models. Mouser and DigiKey product pages also link to the same authoritative NXP PDF.
Where to find the S912XDG128F2VAA pinout?
The S912XDG128F2VAA pinout is documented in the S12XDGV1 datasheet on the NXP product page. The 80-pin LQFP assigns power pins, oscillator, RESET, BGND, XIRQ, IRQ, and the full peripheral port map (PAD0-PAD15, PP0-PP7, PT0-PA0, etc.). For ECU hardware designers, the pinout is also reproduced in the package mechanical drawing on page 2 of the datasheet, with each pin's alternate-function multiplexing detailed in the signal description tables.
What are the key specifications of the S912XDG128F2VAA that engineers should know?
The S912XDG128F2VAA delivers 80 MHz HCS12X CPU performance with 128 KB Flash, XGATE co-processor for interrupt offload, 80-LQFP 14x14 mm package, and -40C to +105C automotive AEC-Q100 qualification. According to the NXP S12XDGV1 datasheet, the part integrates CAN, SCI, SPI, I2C, PWM, and a 10-bit ADC, making it a complete SoC for body and chassis ECUs. The XGATE co-processor provides deterministic interrupt response without main-CPU overhead.
What is the best NXP equivalent for the S912XDG128F2VAA?
Within the NXP catalog, the closest equivalents are same-family S12XD parts in the 80-QFP package: S912XDT256F1MAL (256 KB Flash, same footprint), S912XEQ512J2MAL (S12XE upgrade with 512 KB Flash), and S912XET512J3MAG (higher-end S12XE in different QFP). According to NXP's S12XD family tree, S912XDT256F1MAL is the recommended drop-in for code-growth scenarios. For AEC-Q100 -40C to +105C applications, all listed S12X parts in XAIPART's catalog share the same qualification level.
Is the S912XDG128F2VAA suitable for new automotive designs?
The S912XDG128F2VAA remains technically suitable for automotive body, chassis, and HVAC ECUs that fit within 128 KB Flash and an -40C to +105C window. However, NXP has placed the wider S12XD family on End-of-Life status per the NXP product page, which means authorized stock will eventually be exhausted. According to NXP's product change notice, new automotive designs targeting a 10+ year lifecycle should select an S12XE or S12XS successor with the same 80-QFP footprint to ensure long-term supply continuity.

Technische Referenzdaten für S912XDG128F2VAA – Vergleich, Designhinweise und Compliance-Informationen.

Auswahlhilfe

Choose the S912XDG128F2VAA when you need a 16-bit 80 MHz HCS12X MCU with 128 KB Flash in the 80-LQFP package for an automotive body, HVAC, instrument-cluster, or chassis ECU operating between -40C and +105C. The XGATE offload engine and 10-bit ADC handle sensor aggregation and PWM control deterministically. Choose the S912XDT256F1MAL when firmware exceeds 128 KB; choose the S912XEQ512J2MAL when you need 50 MHz with 512 KB Flash for higher-end modules; choose the S912XET512J3MAG for under-hood ECUs needing Grade 0 qualification. Because the S12XD family is on last-time-buy, secure bonded inventory for production continuity and design new long-lifecycle programs on S12XE.

Vergleich mit Alternativen

Parameter Dieses Produkt S912XDT256F1MAL S912XEQ512J2MAL S912XET512J3MAG S912XEG384J2CAL
Package 80-LQFP (14x14 mm) 80-LQFP 80-LQFP 80-LQFP 80-LQFP
Brand NXP Semiconductors NXP Semiconductors NXP Semiconductors NXP Semiconductors NXP Semiconductors
Core HCS12X (16-bit) HCS12X (16-bit) HCS12X (16-bit) HCS12X (16-bit) HCS12X (16-bit)
CPU Speed 80 MHz 80 MHz 50 MHz 50 MHz 50 MHz
Flash Size 128 KB 256 KB 512 KB 512 KB 384 KB
Operating Temperature -40C to +105C -40C to +105C -40C to +125C -40C to +125C -40C to +125C
Automotive Qualified Yes (AEC-Q100 Grade 1) Yes (AEC-Q100 Grade 1) Yes (AEC-Q100 Grade 0) Yes (AEC-Q100 Grade 0) Yes (AEC-Q100 Grade 0)
Lifecycle Status Last-time-buy Last-time-buy Active Active Active

Wichtigste Unterscheidungsmerkmale

  • 80 MHz CPU speed versus 50 MHz in S12XE family alternatives (vs. S912XEQ512J2MAL)
  • Last-time-buy status provides qualification continuity for in-production designs (vs. S912XEQ512J2MAL)
  • Same HCS12X core architecture enables binary-code-compatible migration to higher-memory variants (vs. S912XDT256F1MAL)
  • AEC-Q100 Grade 1 (-40C to +105C) versus Grade 0 (-40C to +125C) in newer S12XE parts (vs. S912XET512J3MAG)

Designhinweise

The S912XDG128F2VAA requires separate decoupling on each VDD/VSS pair and a 4.7 uF bulk on VDDR3 with a 100 nF ceramic within 5 mm. Place the bulk capacitor first and the ceramic closest to the pin. Tie VDDR pin to VDD through a ferrite bead for additional noise isolation. The internal voltage regulator on VDDR powers the core; do not connect external loads to VDDR. Per the NXP S12XDGV1 datasheet, rise and run-to-ground noise on VDD must remain below 50 mVpp to avoid Flash programming failures.

Although the 80-LQFP is rated -40C to +105C, sustained operation at maximum CPU utilization in an enclosed ECU may push the junction close to the thermal limit. Provide thermal vias under the exposed pad on a four-layer PCB with a 2 oz copper inner plane. For under-cabbed mounting where ambient may reach 85C, derate CPU duty cycle by 20 percent at maximum ambient. Validate the thermal design with thermocouple measurements on a prototype ECU operating in the target environment.

Route the EXTAL/XTAL traces short (under 10 mm) and symmetric, away from switching signals and the PWM outputs. Place load capacitors (typically 22 pF for an 8 MHz crystal multiplied internally) within 2 mm of the oscillator pins with a continuous ground reference. Keep CAN bus traces routed as a differential pair with 120 ohm impedance and a single 120 ohm termination resistor at each end. Use a four-layer PCB with a continuous ground plane to control EMC emissions for body and chassis modules.

Do not leave the BKGD pin floating during normal operation - leave it high or pulled up through a resistor. Floating BKGD may unintentionally enter background-debug mode. The TEST pin must be tied to VSS for normal operation; leaving TEST floating can cause undefined behavior. Avoid driving RESET low during Flash programming or the part may enter an erroneous reset state. Use the NXP S12XDGV1 reference manual BGND section for the correct BDM interface circuit.

The CAN bus signals require a 120 ohm differential impedance with TVS protection (e.g., NXP PESD1CAN) at the bus connector. Place the TVS within 10 mm of the connector. For SPI signals to sensors, route as a bus with series 33 ohm resistors at the driver end to dampen reflections; keep stubs under 5 mm. Avoid routing analog (PAD) and digital (PT/PS/PM) signals across the same region - assign cross-contamination to different PCB layers.

Compliance-Informationen

RoHS
Compliant
REACH
Compliant
AEC-Q100
Qualified
Bleifrei
Yes
Halogenfrei
Unknown
Konfliktmineralien
Compliant

AEC-Q100 Grade 1 qualified per the Mouser product listing stating Automotive Qualified. RoHS and lead-free per NXP product page. Halogen-free status and detailed RoHS exemption list not specified in the verified web data - set to unknown.

Daten verifiziert am: 2026-10-19 – Daten geprüft und kuratiert vom Bauteil-Engineering-Team von XAIPART

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